var serve_right=document.getElementById("serve_right");
var serve_right_a=document.getElementById("serve_right_a");
var serve_right_zw=document.getElementById("serve_right_zw");
var serve_r_p=document.getElementById("serve_r_p");
var serve_right_p=document.getElementById("serve_right_p");
var serve_a=document.getElementById("serve_a");
var serve_right_zwj=document.getElementById("serve_right_zwj");
var serve_a_y=document.getElementById("serve_a_y");
var serve_right_zwjs=document.getElementById("serve_right_zwjs");
var serve_a_yw=document.getElementById("serve_a_yw");
var serve_r_zw=document.getElementById("serve_r_zw");
var serve_a_ywf=document.getElementById("serve_a_ywf");
var serve_r_zwjs=document.getElementById("serve_r_zwjs");
 serve_right.addEventListener('mouseover',
                          function(){
          serve_right_a.style.display='none';
          serve_right_zw.style.display='block';
          serve_r_p.style.display='none';
          serve_right_p.style.display='block';
          serve_a.style.display='none';
          serve_right_zwj.style.display='block';
          serve_a_y.style.display='none';
          serve_right_zwjs.style.display='block';
          serve_a_yw.style.display='none';
          serve_r_zw.style.display='block';
          serve_a_ywf.style.display='none';
          serve_r_zwjs.style.display='block';
    });
 serve_right.addEventListener('mouseout',
    function(){
        serve_right_a.style.display='block';
        serve_right_zw.style.display='none';
        serve_r_p.style.display='block';
        serve_right_p.style.display='none';
        serve_a.style.display='block';
        serve_right_zwj.style.display='none';
        serve_a_y.style.display='block';
        serve_right_zwjs.style.display='none';
        serve_a_yw.style.display='block';
        serve_r_zw.style.display='none';
        serve_a_ywf.style.display='block';
        serve_r_zwjs.style.display='none';
    });

